US20060274909A1 - Hearing aid with printed circuit board and microphone suspension - Google Patents

Hearing aid with printed circuit board and microphone suspension Download PDF

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Publication number
US20060274909A1
US20060274909A1 US10/574,102 US57410206A US2006274909A1 US 20060274909 A1 US20060274909 A1 US 20060274909A1 US 57410206 A US57410206 A US 57410206A US 2006274909 A1 US2006274909 A1 US 2006274909A1
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US
United States
Prior art keywords
microphone
circuit board
hearing aid
sound
suspension
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US10/574,102
Inventor
Bent Severin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Oticon AS
Original Assignee
Oticon AS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Oticon AS filed Critical Oticon AS
Assigned to OTICON A/S reassignment OTICON A/S ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SEVERIN, BENT, JENSEN, LARS TUBORG
Publication of US20060274909A1 publication Critical patent/US20060274909A1/en
Abandoned legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/60—Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles
    • H04R25/604—Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles of acoustic or vibrational transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/65—Housing parts, e.g. shells, tips or moulds, or their manufacture
    • H04R25/658—Manufacture of housing parts
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/60—Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles
    • H04R25/609—Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles of circuitry
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/18—Printed circuits structurally associated with non-printed electric components
    • H05K1/182—Printed circuits structurally associated with non-printed electric components associated with components mounted in the printed circuit board, e.g. insert mounted components [IMC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2225/00—Details of deaf aids covered by H04R25/00, not provided for in any of its subgroups
    • H04R2225/021—Behind the ear [BTE] hearing aids
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2225/00—Details of deaf aids covered by H04R25/00, not provided for in any of its subgroups
    • H04R2225/57—Aspects of electrical interconnection between hearing aid parts
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/60—Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/60—Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles
    • H04R25/603—Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles of mechanical or electronic switches or control elements
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10007—Types of components
    • H05K2201/10083—Electromechanical or electro-acoustic component, e.g. microphone
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10431—Details of mounted components
    • H05K2201/10439—Position of a single component
    • H05K2201/10446—Mounted on an edge
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
    • H05K3/301—Assembling printed circuits with electric components, e.g. with resistor by means of a mounting structure

Definitions

  • the invention concerns a hearing aid, which is intended for placement behind the ear lobe of a hearing aid user where the hearing aid has a printed circuit board, a microphone and a suspension for holding the microphone, a top shell part with at least one sound inlet opening for directing sound from the environment to the microphone and a bottom shell part which holds the printed circuit board.
  • the long leads are however problematic in that they cause increased electrical resistance, picks up electrical noise signals and further it is difficult to have them placed at pre-defined positions at each assembly of the hearing aid.
  • the invention provides a hearing aid of the above kind, where short or no leads at all are required, and where at the same time the hearing aid shell parts are easily parted and assembled without disturbing the electrical or acoustic paths to/from the microphone.
  • the microphone suspension comprises a sound canal between the microphone and the at least one sound inlet opening in the top shell part.
  • the sound canal thus is made of a rather flexible material, and it will be easy to assure good and sound tight connection with the sound inlet opening in the top shell part of the hearing aid when the top and bottom shell parts are connected.
  • the fixing means for attachment to the circuit board arranged adjacently to the sound canal.
  • the fixing means are arranged at some distance from the microphone as such, and this helps at the one side to keep the overall size small and at the other side to assure flexible suspension of the microphone.
  • the fixing means may comprise adhesive or other ways of mechanical attachment means whereby the microphone suspension gains stable contact with the circuit board. Examples hereof could be an aperture in the suspension means may be arranged to embrace a protruding part of the circuit board, or a protruding part of the suspension means which is caused to extend through an aperture in the circuit board.
  • a method for producing a hearing aid is provided. Accordingly the microphone is connected both through electric wire and by the suspension means to the electric circuit board, and this sub-assembly is then placed in the hearing aid bottom shell, whereupon the top shell is placed over this sub-assembly and fastened to the bottom shell and at the same time the sound inlet opening in the top-shell is tightly connected to the sound canal associated with the microphone suspension.
  • This way of producing the hearing aid is both time saving, and it provides a hearing aid which is easily taken apart and re-assembled for service purposes.
  • FIG. 1 is an exploded side-view of the hearing aid parts according to the invention
  • FIG. 2 is an enlarged view of a detail of FIG. 1 ,
  • FIG. 3 is a perspective view of the microphone and printed circuit board
  • FIG. 4 is a side view of the printed circuit board with the microphone associated therewith.
  • FIG. 5 is a exploded perspective view of a further embodiment of the invention.
  • FIG. 1 a hearing aid according to an embodiment is shown.
  • the hearing aid comprises a bottom shell part 1 , a printed circuit board 2 , a top shell part 3 and a microphone 4 with suspension 41 , 42 .
  • the bottom shell part 1 holds a receiver 25 and a sound outlet 12 and a further microphone 13 with corresponding sound inlet 14 .
  • the printed circuit board 2 is made of a usual rigid PCB, and it holds both a volume wheel 21 and a battery compartment wall 22 with embedded battery connections and a variety of active and passive electronic components as seen in FIG. 3 .
  • the microphone 4 has a microphone casing and a snout part.
  • the snout part is embraced by a suspension part 41 which is integral with the sound canal 42 for directing sound from the surroundings to the microphone casing 40 .
  • the upper shell part 3 comprises a battery drawer part 31 and has sound inlet openings 32 at both sides for allowing sound to reach the further microphone 13 .
  • the sound inlet openings 32 in the tops shell part 3 corresponds with the sound inlets 14 when the top- and bottom shell parts are assembled.
  • the top shell part 3 has a further sound inlet opening 33 for guiding sound into the sound canal 42 leading to the microphone 4 .
  • the sound opening 32 has a snout part 33 which is open towards the inside of the hearing aid. This snout part is dimensioned to receive the mouth of the sound canal 42 when the top shell 3 is placed over the circuit board 2 in order to assemble the top- and bottom parts of the hearing aid.
  • FIG. 4 the microphone 4 and the circuit board 2 is seen with the microphone 4 in place.
  • the circuit board 2 has a projecting part 24 which is also seen in FIG. 3 .
  • the sound canal 42 has a gripping aperture 45 such that this aperture 45 may embrace the projecting part 24 of the circuit board 2 whereby the microphone 4 is suspended at the circuit board 2 .
  • the attachment between the circuit board and the suspension may also be shaped as a protruding part of the suspension which is caused to extend through a hole or aperture in the circuit board (this embodiment is not shown in the drawings).
  • FIG. 5 a further embodiment of the invention is shown, and here the means for fastening the suspension to the printed circuit board comprises a separate frame part 55 in relation to the canal 42 .
  • the frame part 55 has the aperture 45 , which is to embrace the projecting part 24 of the circuit board 2 , while the frame part embraces and holds the canal 42 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Neurosurgery (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)

Abstract

A hearing aid for placement behind the ear lobe of a hearing aid user has a rigid circuit board, a microphone and a suspension for holding the microphone, a top shell part with at least one sound inlet opening for directing sound from the environment to the microphone and a bottom shell part which holds the printed circuit board, the microphone suspension including fixing means for attachment thereof to the circuit board.

Description

    AREA OF THE INVENTION
  • The invention concerns a hearing aid, which is intended for placement behind the ear lobe of a hearing aid user where the hearing aid has a printed circuit board, a microphone and a suspension for holding the microphone, a top shell part with at least one sound inlet opening for directing sound from the environment to the microphone and a bottom shell part which holds the printed circuit board.
    • BACKGROUND OF THE INVENTION
  • In hearing aids of the above kind it is a problem to provide an assembly method which: ensures a sound path from the surroundings to the microphone, provides a safe connection between the microphone and the printed circuit board and allows the top- and bottom shell parts to be parted from each other. In these instruments, the circuit board is held at the bottom part of the two shell parts where the microphone sound input has to be established to the top shell part, while at the same time a reliable and secure electrical connection between the microphone and the circuit board must also be provided. One possible solution could be to fasten the microphone in the top shell part and use long electrical leads between the microphone and the print and thus by way of the long leads allow the bottom and top shell part to be parted from each other. The long leads are however problematic in that they cause increased electrical resistance, picks up electrical noise signals and further it is difficult to have them placed at pre-defined positions at each assembly of the hearing aid. The invention provides a hearing aid of the above kind, where short or no leads at all are required, and where at the same time the hearing aid shell parts are easily parted and assembled without disturbing the electrical or acoustic paths to/from the microphone.
    • SUMMARY OF THE INVENTION
  • By providing a hearing aid as claimed in claim 1 the above problems are solved. By having the microphone associated with the printed circuit board, it is assured that very short leads can be used to provide the electrical connection between the circuit board and the microphone. At the same time the upper shell part and the bottom shell part can be parted and re-assembled in connection with service and maintenance of the hearing aid without violating the leads.
  • As claimed in claim two, the microphone suspension comprises a sound canal between the microphone and the at least one sound inlet opening in the top shell part. The sound canal thus is made of a rather flexible material, and it will be easy to assure good and sound tight connection with the sound inlet opening in the top shell part of the hearing aid when the top and bottom shell parts are connected.
  • Further as claimed in claim three it is advantageous to have the fixing means for attachment to the circuit board arranged adjacently to the sound canal. In this way the fixing means are arranged at some distance from the microphone as such, and this helps at the one side to keep the overall size small and at the other side to assure flexible suspension of the microphone.
  • The fixing means may comprise adhesive or other ways of mechanical attachment means whereby the microphone suspension gains stable contact with the circuit board. Examples hereof could be an aperture in the suspension means may be arranged to embrace a protruding part of the circuit board, or a protruding part of the suspension means which is caused to extend through an aperture in the circuit board.
  • In a further aspect of the invention according to claim five a method for producing a hearing aid is provided. Accordingly the microphone is connected both through electric wire and by the suspension means to the electric circuit board, and this sub-assembly is then placed in the hearing aid bottom shell, whereupon the top shell is placed over this sub-assembly and fastened to the bottom shell and at the same time the sound inlet opening in the top-shell is tightly connected to the sound canal associated with the microphone suspension. This way of producing the hearing aid is both time saving, and it provides a hearing aid which is easily taken apart and re-assembled for service purposes.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is an exploded side-view of the hearing aid parts according to the invention,
  • FIG. 2 is an enlarged view of a detail of FIG. 1,
  • FIG. 3 is a perspective view of the microphone and printed circuit board,
  • FIG. 4 is a side view of the printed circuit board with the microphone associated therewith.
  • FIG. 5 is a exploded perspective view of a further embodiment of the invention.
    • DESCRIPTION OF A PREFERRED EMBODIMENT
  • In FIG. 1 a hearing aid according to an embodiment is shown. The hearing aid comprises a bottom shell part 1, a printed circuit board 2, a top shell part 3 and a microphone 4 with suspension 41, 42.
  • The bottom shell part 1 holds a receiver 25 and a sound outlet 12 and a further microphone 13 with corresponding sound inlet 14.
  • The printed circuit board 2 is made of a usual rigid PCB, and it holds both a volume wheel 21 and a battery compartment wall 22 with embedded battery connections and a variety of active and passive electronic components as seen in FIG. 3.
  • The microphone 4 has a microphone casing and a snout part. The snout part is embraced by a suspension part 41 which is integral with the sound canal 42 for directing sound from the surroundings to the microphone casing 40.
  • The upper shell part 3 comprises a battery drawer part 31 and has sound inlet openings 32 at both sides for allowing sound to reach the further microphone 13. The sound inlet openings 32 in the tops shell part 3 corresponds with the sound inlets 14 when the top- and bottom shell parts are assembled. Also the top shell part 3 has a further sound inlet opening 33 for guiding sound into the sound canal 42 leading to the microphone 4. As seen in FIG. 2 the sound opening 32 has a snout part 33 which is open towards the inside of the hearing aid. This snout part is dimensioned to receive the mouth of the sound canal 42 when the top shell 3 is placed over the circuit board 2 in order to assemble the top- and bottom parts of the hearing aid.
  • In FIG. 4 the microphone 4 and the circuit board 2 is seen with the microphone 4 in place. The circuit board 2 has a projecting part 24 which is also seen in FIG. 3. The sound canal 42 has a gripping aperture 45 such that this aperture 45 may embrace the projecting part 24 of the circuit board 2 whereby the microphone 4 is suspended at the circuit board 2. In this location it is easy to provide the electric leads 46 between the circuit board 2 and the microphone 4. Once the leads have been provided it is a simple task to assemble the hearing aid. The attachment between the circuit board and the suspension may also be shaped as a protruding part of the suspension which is caused to extend through a hole or aperture in the circuit board (this embodiment is not shown in the drawings).
  • In FIG. 5 a further embodiment of the invention is shown, and here the means for fastening the suspension to the printed circuit board comprises a separate frame part 55 in relation to the canal 42. This makes assembly of the microphone to the circuit board easier. The frame part 55 has the aperture 45, which is to embrace the projecting part 24 of the circuit board 2, while the frame part embraces and holds the canal 42.

Claims (5)

1. Hearing aid, which is intended for placement behind the ear lobe of a hearing aid user, where the hearing aid has a rigid circuit board, a microphone and a suspension for holding the microphone, a top shell part with at least one sound inlet opening for directing sound from the environment to the microphone and a bottom shell part which holds the printed circuit board, whereby the microphone suspension comprises fixing means for attachment thereof to the circuit board.
2. Hearing aid as claimed in claim 1, whereby the microphone suspension comprises a sound canal between the microphone and the at least one sound inlet opening in the top shell part.
3. Hearing aid as claimed in claim 2, whereby the fixing means for attachment to the circuit board are arranged adjacently to the sound canal.
4. Hearing aid as claimed in claim 3, whereby the fixing means comprises an aperture, which is arranged to receive a projecting part of the circuit board.
5. Method for producing a hearing aid according to claim 1, whereby firstly the circuit board, the microphone suspension and the microphone is initially assembled and whereby secondly electric wire connections between the microphone and the circuit board are provided and whereupon the subassembly is placed in the bottom shell part and the top shell part is placed over the subassembly such that the sound inlet gains connection with the sound canal of the microphone suspension.
US10/574,102 2003-10-03 2004-09-16 Hearing aid with printed circuit board and microphone suspension Abandoned US20060274909A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DKPA200301456 2003-10-03
DKPA200301456 2003-10-03
PCT/DK2004/000613 WO2005034578A1 (en) 2003-10-03 2004-09-16 Hearing aid with printed circuit board and microphone suspension

Publications (1)

Publication Number Publication Date
US20060274909A1 true US20060274909A1 (en) 2006-12-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
US10/574,102 Abandoned US20060274909A1 (en) 2003-10-03 2004-09-16 Hearing aid with printed circuit board and microphone suspension

Country Status (4)

Country Link
US (1) US20060274909A1 (en)
EP (1) EP1671515A1 (en)
CN (1) CN1860825A (en)
WO (1) WO2005034578A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK2023663T3 (en) 2007-08-07 2011-05-30 Bernafon Ag BTE hearing aid with interchangeable cover
CN112616113B (en) * 2020-12-08 2022-05-27 厦门维纳通医疗科技有限公司 Hearing aid

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3835263A (en) * 1973-02-05 1974-09-10 Industrial Research Prod Inc Microphone assembly operable in directional and non-directional modes
US5265168A (en) * 1990-12-18 1993-11-23 Siemens Aktiengesellschaft Hearing aid
US6041128A (en) * 1994-01-31 2000-03-21 Rion Kabushiki Kaisha Battery receiving chamber and hearing aid
US6522764B1 (en) * 1998-10-07 2003-02-18 Oticon A/S Hearing aid
US6876749B1 (en) * 1999-07-12 2005-04-05 Etymotic Research, Inc. Microphone for hearing aid and communications applications having switchable polar and frequency response characteristics

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2941971A1 (en) * 1979-10-17 1981-04-30 Robert Bosch Gmbh, 7000 Stuttgart Microphone assembly for pocket hearing aid - has sleeve enclosing microphone locked inside shell retained by resilient arms inside outer shell
DE3616773A1 (en) * 1986-05-17 1987-11-19 Bosch Gmbh Robert Hearing aid
CA2014960C (en) * 1990-04-19 1995-07-25 Horst Arndt Modular hearing aid
DE59104707D1 (en) * 1991-02-27 1995-03-30 Siemens Ag Hearing aid to be worn on the head.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3835263A (en) * 1973-02-05 1974-09-10 Industrial Research Prod Inc Microphone assembly operable in directional and non-directional modes
US5265168A (en) * 1990-12-18 1993-11-23 Siemens Aktiengesellschaft Hearing aid
US6041128A (en) * 1994-01-31 2000-03-21 Rion Kabushiki Kaisha Battery receiving chamber and hearing aid
US6522764B1 (en) * 1998-10-07 2003-02-18 Oticon A/S Hearing aid
US6876749B1 (en) * 1999-07-12 2005-04-05 Etymotic Research, Inc. Microphone for hearing aid and communications applications having switchable polar and frequency response characteristics

Also Published As

Publication number Publication date
CN1860825A (en) 2006-11-08
WO2005034578A1 (en) 2005-04-14
EP1671515A1 (en) 2006-06-21

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AS Assignment

Owner name: OTICON A/S, DENMARK

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SEVERIN, BENT;JENSEN, LARS TUBORG;REEL/FRAME:017969/0883;SIGNING DATES FROM 20060523 TO 20060529

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION